Successful removal of p-quinone with chitosan in an aqueous phase in relation to degree of deacetylation.
Biofactors
; 21(1-4): 339-42, 2004.
Article
en En
| MEDLINE
| ID: mdl-15630223
ABSTRACT
Phenol oxidant is successfully removed by using chitosan particles in the aqueous phase. Removal of p-quinone by chitosan from crab shells was investigated kinetically from molecular weight (MW) of chitosan, deacetylation degree (DD) and reaction temperature. The rate constant assuming first-ordered reaction on removal of p-quinone in aqueous phase primarily depended on the MW of chitosan, not on the DD. Quantities of chitosan exceeding 5 x 10(5) MW are able to obtain a sufficiently high rate constant (10(-3) s(-1)). At higher temperatures, higher rate constants were obtained in the entire experimental MW and DD. The activation energy obtained was 43.8 kJ x mol(-1).
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Bases de datos:
MEDLINE
Asunto principal:
Quinonas
/
Quitosano
/
Moluscos
Límite:
Animals
Idioma:
En
Revista:
Biofactors
Asunto de la revista:
BIOQUIMICA
Año:
2004
Tipo del documento:
Article